I have always used my favorite rub for my fatties. I like to stuff or plain and then I sauce at the end. Last weekend I just rolled in favorite rub then smoked with pecan and mesquite until 160. Then I took some left over bbq sauce mixed with 1/3 cup of pineapple jelly and some apple juice and simmered until jelly was well constituted in the mixture. Then I brushed it on several times during the last 15 to 20 min. Good eats!!
Injecting is a intriguing idea, what would you inject with.